Cabinet for projecting apparatus



1 Dec. 27, 1927.

Original Filed March a. 1922 5 sheets-sheet 1 f INVENTOR Dec. 27, 1927. v 1,653,743

, L. A. STEGMANN CABINET FQR PROJECTING APPARATUS Original Filed March 1922 I5 5 et$$hee I HQIVENTORI 2 I ATTO%EY Dec. 27, 1927.

L. A. STEGMANN CABINET FOR PROJEGTING APPARATUS Original Filed March 8, 1922 3 Sheets-Sheet 3 l men M BY g I ATT NEY Patented Dec. 27, 1927.

UNITED STATES PATENT, OFFICE.

LOUIS A. S'IEGMANN, OF IRVINGTON, NEW JERSEY, ASSIGNOR 'I'O CTNEMA ADVERTIS- IN'G CORPORATION, OF NEWARK, NEW JERSEY.

CABINET FOR PROJ'EGTTNG APPARATUS.

Application filed March 8, 1922, Serial No. 541,915. Renewed ltay 4, 1827.

This invention relates to a cabinet for projecting apparatus, which is partlcularly adapted for display purposes, such as for use in advertising, this class of machine having within it a screen or reflective surface, so that the picture is viewed by looking into the cabnet.

The invention relates to a cabinet of this kind which is adapted to be folded or tele.

scoped, and when thus telescoped. to be easlly carried about, and which, when extended, automatically places the element on which the picture is displayed into position.

The invention further consists in an improved projecting apparatus and associated parts to permit the useof a continuous film in the machine, which film is fed from and to a reel, and further,in a construction that permits the withdrawal of such reel, with the continuous film, without confusion of the parts. a

The invention is also designed to provide a machine which positively rotates the reel of continuous film from the projecting apparatus, and whichhas an operative, readily separable connection. disposed so that when the reel is placed in its proper position in the cabinet it is automatically in operative connection with the projecting apparatus, and similarly is disconnected simply by the withdrawal of the reel.

The invention further consists in certain details of construction which will be hereinafter more fully described and finally" embodied in the claims.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a vertical longitudinal section through the cabinet with the members. of the cabinet extended, the projecting apparatus and the reel-supporting part of the device being shown in elevation. Figure 2 is a section taken on line .2-2 in Figure 1. Figure 3 is a top view of the film support, parts of the cabinet being shown in dotted outline. Figure 4 is a central vertical section of Figure 3, the right hand end of which is shown in elevation, and Figures 5 and 6 are front views of cabinets, showing two different forms in which the cabinet can be constructed.

The casing or enclosure of the cabinet comprises two cabinet members, a lower member 10 and an upper member 11, ar-

' ranged so that they telescope, the upper member preferably sliding down over the lower member, the upper member acting as a carrying means as it can be secured down in place by the catches 12 fitting into holes 13, and has a suitable handle 14 at the top. The lower cabinet member 10 contains lamp, film propelling mechanism and the motor for the latter. These parts are prefthe projecting apparatus comprising -a abulbinalamp house 17 with a perforated top plate 18, which, with the perforated art 19 of the cabinet member 11, keeps it om overheating the cabinet. The lamp house is is closed by a flap .20 in the back of the member 11 which flap is only accessible when the member 10 is up, that is to say, it is locked shut when covered by the member' 10. A catch 21 holds it shut when the member 10 is up. The film guide 22 is arranged in front of the condenser tube 23, and the light, after passing through the film, is projected on a set of mirrors dis osed to convey and enlarge the picture. MlITOI'S 24, 25 and 26 illustrate such arrangement of mirrors, the latter reflecting the icture on a translucent screen 27 held in t e top of the member 10. The screen can be of any suitable material, but I prefer to use translucent glass. To project a reflection from the screen 27 to the outside of the casing I provide one of the sides of the top cabinet member 11 with an opening 28, and

the top cabinet member is extended above be employed, and I prefer to use the catches 12 which fit into openings 34 in the lower cabinet member to hold the upper cabinet member raised.

' The moving parts of the apparatus are driven by a suitable motor 35, and it operates through suitable gearing 36 and 37 on the shaft 38, on whichii s arranged any of the usual forms of step-by-step mechanism, such as Geneva movements, for rotating,'.

with a step-by-step movement, the film-feed ing roll 40 mounted in the film guide. A shutter 41 is mounted so as to rotate in front of the mirror 24, and is geared up by means of gearing 42 and the sprocket chain 43 passing over the sprockets 44. and 45 with the shaft 38.

I re er to use in my machine a continuous this film being endless and being fed from the center and returned to the outside edge of a roll into which it is formed on a reel, the reel being part of a support which is readily removable form the bracket 15. The support comprises a frame 46 which is provided on its side edges with grooves 47 which slide on the tracks-48 of the bracket 15, and can be locked in position by means such as the pins 49, shown in Figure 4. The preferred arrangement is one that permits the passage of the film support: edgewise from the'cabinet in a lateral direction, thereby takingup but little room and being separated in a compartment or chamber by itself underneath the top plate of the bracket. 15. The frame 46 has arranged therein a fixed bearing 50, to which is secured the plate 51 which holds the bracket 52 and also supports the rollers 53, the shafts 54 of which are fixed, the rollers 53 being loosely mounted thereon to rotate, and said shafts thus acting as posts to hold, in gzed position, the ring 55 and the top plate Around the fixed-bearing 50 fits the pan 57 which supports the roll 58 of film. The roll 58 of film rests by its own weight only on the pan 57 and is fed through the opening 59 in the center of the reel, and is returned back to the outside of the roll 58, and to provide for the confinement of, any excess film that is fed to the roll 58 I provide an apron 60 in the form of a thin sheet metal wall extending all around and which is secured to the top plate 56. 0 The top plate the reel when the projecting apparatus'is in operation.

The reel is thus rotated around the pan, and coming out through the opening 59 is fed by a suitably shaped plate through the slit 66 in the top plate of the bracket 15, and after passing through the film guide 22 is returned through ,the top plate of the bracket 15 through the slit 67, which slits, as will be'seen from Figure 2, can be fitted with spring or gravity operated flaps 68 to guard against undue side movement of the 'film and also to assist in localizing an combustion that may take place in the 1m to prevent it damagin an part of the apparatus on the other side of the top of the plate of the bracket 15. The film, as it emerges through the opening 59, is positively pulled from the roll 58 over one of the rollers 53, as will be seen from Fi ure 3, by means of the steadily rotating. lm sprocket 69 'on the shaft 70 mounted in the fixed bearing 50 and in a bearing at the end of the bracket 52, the shaft 70 having a sprocket 71 driven by a chain 73 and a sprocket 74 on the shaft 75, the shaft 7 5, mounted in bearings on the bracket, being provided with a continuously operating 1m sprocket 76, which sprocket 76 is arranged adjacent to the outside of the film support and takes that part of the film which is returning to the roll and feeds it positively back to the roll 58 through an opening in the apron 60, as will be seen from Figure 3.

This return of the film is facilitated on account of the previously described steady rotative movement of the pan 57, and the parts are usuall so proportioned that there is a slack or shght excess of filmbetween the film sprockets 76 and the roll 58, that is to say, the slack of the film is placed between that part of the tightly wound portion of the roll 58 and the apron 60.

The shaft 75 and its film sprocket, and also the film sprocket 69 and the shaft 70, are rotated in unison through the connection of the chain 73, the shaft 75 being positively rotated by the gear 77 which is disposed so that it is in mesh with the teeth 61 of the pan 57. The shaft 75 and its associated parts are mounted in an extension 78 of the film support and are thus removable therewith, so that all the parts mounted on the frame 46 can be withdrawn from the machine on the tracks 48, either to change the film or to make repairs, and can be returned to i the same position, and when in place it is operatively connected up with the projecting apparatus by reason of the teeth 61 engaging the pinion 62, as there are no other connections necessary, since the teeth on the pan 57, in transmitting power to the gear 77, operate the rest of the film propelling device within the film support.

An opening in the frame to provide for the removal of the film support is closed by a suitable door 7 9, and this door 7 9, and also the door 80, which gives access to the projecting apparatus on theother side,can only be opened after the top cabinet member is in its extended position. It will be understood that when the film is to be removed from the machine the flaps 68 are thrown back to uncover the fulllength of the slots 6.6 and 67, the door'79 is opened, the film is removed from the film guide 22 "in the usual way and then the film support and the whole length oat continuous film can be removed bodily from the casing.

The device can be made in difierent forms, and in Figure 5 I show one with the top casing made enlarged at the top to provide for a lar er size mirror in which the picture 80 is re ected, and in Figure 6 I show a difierent type in which the lower cabinet member is the same, but the upper cabinet member 11 is of substantially the same size as the lower cabinet member.

It will be noted that the slack or excess film is placed between the film guide 22 and the point of its return and the point of its delivery to and from the film support, this bein due to the tact that the sprockets 72 and 4; are the same size, and their respective film sockets are the same size, and they are driven at the same speed, so that there is insured the same amount of film being delivered to the roll 58 as is withdrawn therefrom.

It will be further noted that this steady feed and return mechanism is driven from. the rotating film support which, in turn, is

driven from the pinion v62 connected up directly with the step-by-step film-operating mechanism on the shaft 38.

I claim:

1. A cabinet for projecting apparatus comprising a lower cabinet member with an. opening in the top, a film mechanism in the member to project a reproduction through the opening, an upper cabinet member telescopically arranged over the lower member and adapted to be fixed in extension thereof, said member having an open side, and a mirror hinged at one end to one member and in sliding engagement with the other member so that the mirror folds flat between them when they are slid together and raised to tilted position to reflect extended.

2. A cabinet for projecting apparatus comprising a lower cabinet member with an opening in the top, a film mechanism in the member to project a reproduction through the opening, an upper cabinet member telescopically fitting over the lower member and adapted to be fixed in extension thereof, said'member having an open side, a mirror hinged at one end of. one member, and a slotted bracket on the other member to support the mirror so that it folds flat between them when they are slid together and is in titled position to reflect through the open side when the members are extended.

3; A cabinet "for projecting apparatus comprising a lower cabinet member, an upper cabinet member telescopically arranged on the lower cabinet member, coacting means on the members for-fastening them in extended and assembled positions, and a mirror connected to the lower member and the upper member in such a manner that the mirror lies fiat between the members when they are assembled and is in angular position when they are extended, the up r member having an open side through which the mirror, when in angular position, is arranged to reflect 4-. A cabinet for projecting apparatus comprising a lower cabinet member, an upper cabinet member telescopically arranged on the lower member, a projecting apparatus in the lower member, said apparatus including a lamp house, an opening in the side of said cabinet to give access to the lamp house, and a lid for said opening whereby the lid can only be opened when the cabinet members are in extended position.

5. The combination with a projecting machine and a film reel having means tpr feeding film from the center and to the periphery of a film roll on said reel, of a plate forming a fire resistant partition between said projecting machine and reel, the axis of said and being perpendicular to the plane of said partition, said reel being movable in a plane parallel with theplane of said partition, and

said partition containing slots for the passage of film to and from the projecting machine, said slots extending to the edge or" said partition and permitting removal of the reel with a looped film thereon away from said partition.

6. A cabinet for projecting apparatus comprising, a support, a reel of continuous film in the support, a bracket covering the Sup ort and through which the film passes, trac s in the cabinet on which the support can be laterally slid for withdrawal, the bracketbeing cut away to permit the withdrawal of that part of the film above the bracket with the support.

7. A cabinet for projecting apparatus comprising a cabinet member, a projecting apparatus, a support, a reel of continuous film in the support, a bracket supporting the projecting apparatus and ooveringthe support, the cabinet having 'an opening through which the support can be withdrawn, and separable coact-ing means on the reel and the projecting appartus disposed so that the reel is operatively connected with the apparatus when thesupport is slidinto position.

8. A cabinet for projecting apparatus comprising a cabinet member, projecting appartus in the member, a removable support, a reel for a film on the support, a fixed gear in the cabinet and operated with the projecting'apparatus, and a gear on the reel and disposed so as to be placed in mesh with the fixed gear when the support is placed in position.

- In testimony that I claim the foregoing,

I have hereto setfmy hand, this-3rd day of March 1922.

LOUIS A. s'TEeM iI-fi. 

